Lock.



L. W. HOLLAND.

LOCK. APPLICATION FILED hue. I8. 1914. Patented July 20, 1915.

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LOCK.

APPLICATION FILED AUG- 8. 1914.

1,147,092; Patented July 20, 1915.

2 SHEETS-SHEET 2.

Attornevs COLUMBIA PLANOBRAPH CO ,WA.SHXNGTON. n.c.

Milanese;

s'rns w. HoI.LiA1 n 0 E SAN Hi arssova LOGK.

To allwhom it "concern,"

Be it known-that I, LUTHER Hermann,

.a-citizen ofth'e United States, residing at Pleasant Hill, in .the county of Cass and State of Missouri, have invented a newgand aisej'fufl Look, of which the ifollowing is a specification.

lhelpresent invention appertains to looks.

and aims to provide a 1 novel and improved door lock.

One of the iobjects of this invention is to provide a lock embodying a spring pressed ,latchbolt adapted to be retrected by a knob controlled roll-back, ;in combination with .a novel key-controlled means for locking the latch boltin projected position.

Another object of the invention is ,torprovide a unique cletentor holder cooperable with the latch boltand adapted to hold the .latch bolt :in retracted position when the idoorzis' opened, and toreleasethe latch bolt when the door is-closed, so that the latch.

bolt will-be sprung into its keeper "without the necessity of slammingthe door shut.

The present invention also contemplates a door lock of 1 general improved construction. wherebythelock willlbe comparatively simple, durable, and inexpensive in construction, as well as beingconvenient, practical, serviceable and eifieient in its use.

With the foregoingand .otheryobjeets in niew which will appear as the description nroceeds, the invention resides in the combination and arrangement of partsxand in the details of construction hereinafter described and claimed, it being understood that changes --in the precise embodiment. of

the invention herein disclosed can be made withinthe scope of what is claimed without departing from the spirit of the-invention.

:T-he invention has been illustrated in its preferred embodiment in the -1accompanying drawing, wherein Figure '1 is a side elevation of the lock, with the face plate removed and parts broken away. Fig. {2 is a horizontal or longitudinal section of-the lock. with :the l-EltClI bolt .held in retracted position. Fig. 3 is a top view ofthe lock with thela-tch bolt released and engaged to the keeper. 4 is a fragmental detail illustratin-gthe detent or holder. Fig. 5 is a niedueed view of the keyemployed for locking and unlocking the latchibolt. Fig. -6 is a :face view ofamor t-ise-lock embodying 'EliIl'lOdlfi'Qd form of de tent for the latch bolt, the detent being villus- Speeificatio'n of setters Tatent.

ApplicationsfileiliAugust 18,1914. --7Seria17No. 857,390.

=trat ed in released position. Fig. 7 is a view similar to Fig. illustrating the detent in gpositionto hold the latch. bolt in retracted position. Figs. 8 and .9 are sectional details taken onithe lines 8-.-8 and ,99 of Figs.

6 and 7, respectively.

In carrying out the present invention, there is employed a suitable case 1, which may be secured to the inner side of a door, or which may be ifitted ina suitable mortise providedain the free edge of the door ;-whichever is desired. :A latch :bolt'2 has its beveled endslidable through the outer end of the case 1, andis provided with a pair of spaced longitudinal ,bars or arms 8 projecting toward but terminatingshortof the inner endof {the case and ,provided at their inner or free ends, with angular lugs 4: with which the wiper arms 5 of the roll-backfi-are engageable. The roll-back 6 isljournaled to the back and faceaplate ort=the case 1, and has the knob spindle 7 engaged therethrough, similar to an ordinary lock. The latch bolt is guided for sliding or'reciprocatory .movement within'theyease l, bya pair of ribs 7 provided upon theback-of the case 1, and between which thelatchbolt is movable.

In order to spring press the :latch bolt to projectedposition when the same is free, the

bars 3 of the latchbolt have an integral web 8 connecting them intermediate their ends, and the .web 8 is provided with a pin or'lug spring 10 will eliminate any side strains upon the latch bolt, and as-a result, the latch bolt willmove with the least amount of fric- 'tion, which is highly desirable.

A second spring 13 may be employed jointlywith or-independent of the spring 10 for projecting the latch bolt, the spring 13 having a coil 14 intermediate its-ends, which .embraees a .pin or lug 15,.projecting from the back of the case 1, while the arms or terminalportions of the spring13 bear against the rim of the case 1 and the pin or lug ,9

of the latch bolt for pressing the latch bolt outwardly. As indicated, either or both of the springs may be employed, as desired.

The locking mechanism for the latch bolt includes a spindle or stem 16 journaled through the back and face plate of the case 1 within the slot or opening defined by the bars 3 of the latch bolt, and the spindle or stem 16 is formed within the case with a rectangular or oblong tumbler or cam 17, while one end of the spindle 16 projects from the face plate of the case and is provided with a knurled thumb piece or knob 18. The tumbler 17 is provided adjacent the back of the case 1, with agear segment 19 extending from one side of the tumbler toward one end thereof, and the back of the case 1 is provided with a circular key-hole 20 for the reception of the key 21 which has its shank provided with a bit 22 in the form of a spur gear. The bit 22 of the key is insertible through the opening or key-hole 20, whereby the bit 22 is adapted to intermesh with the segment 19 of the tumbler for oscillating or rotating the tumbler or cam for locking and releasing the latch bolt as will hereinafter more fully appear.

The tumbler or cam 17 is yieldably held at its various positions, by means of a spring 23 which is provided with a coil or loop 24 intermediate its ends embracing one of the pins 12, and the said spring has its arms or terminal portions bearing against the rim of the case 1 and against the tumbler or cam 17, respectively. The tumbler is provided with a groove 25 extending along one side and along its ends, for the engagement of the corresponding arm or terminal portion of the spring 23, whereby the said arm of the spring 23 in bearing against the said side and ends of the tumbler or cam, will hold the tumbler in the positions desired.

A detent or holder 26 is provided for the latch bolt 2, and embodies a leaf spring 27 having its butt end secured to the face plate of the case 1, by means of a screwor securing member 28, and a second leaf spring or strip 29 resting against the outer side of the leaf spring 27 and having a slot 30 at its butt end engaging the screw or clamping member 28. The free end of the leaf spring 27 is bent angularly, as at 31, to engage over the free or outer-end of the latch bolt, when the latch bolt is retracted, and the edges of the leaf spring 27 are provided with refl exed ears 32 engaging over the edges of the spring or strip 29 to hold the spring or strip 29 in place against the leaf spring 27, and so as to enable the spring or strip 29 to be adjusted longitudinally when the screw 28 is loosened. The free end 33 of the spring or strip 29 projects beyond the free end of the leaf spring 27, to contact with or rest against the keeper 34 of the look when the door is closed.

In practice, the case 1 is secured to the door 35 in any suitable manner, and the door is provided with an opening or bore 36 leading to the key-hole 20 of the case from the outside of the door, while the fingerpiece or knob 18 of the tumbler 17 is disposed upon the inside of the door, in order 5 that the latch bolt may be readily locked and unlocked from the inside, while the latch bolt may only be locked and unlocked from the outside by means of the key 21, in the manner of the ordinary night latch. Due to the fact that the tumbler or cam 17 and its spindle or stem 16 are disposed in the median line of the latch bolt directly behind then, when the door 35 is closed, the project ing end '33 of the detent 26 will rest against the keeper 34 to retract the angular portion.

31 of the detent outof engagement with the latch bolt 2, and consequently the latch bolt will be free to spring into the keeper 34 for holding the door shut. As soon as the latch bolt is retracted and the door opened, the detent 26 being released from the keeper 34 which is secured to the jamb 37, will enable the angular portion 31 of the detent to move over the outer'end of the latch bolt, while the latch bolt is retracted, and consequently the detent will hold the latch bolt in retracted position as seen in Figs. 1 and 2, while the door is open. When the door is again closed, the detent 26 will be released by the keeper 34, to permit the latch bolt to snap into the keeper automatically. In this manner, the latch bolt will be automatically held in retracted position while the door is open, and will be released as soon as the door is closed, to avoid the necessity of slamming the door shut as is not infrequently necessary with the ordinary look. just the detent for properly accommodating the keeper 34 when thedoor shrinks away from thejamb, the screw 28 is loosened, and

To adinto engagement with the keeper 34 in the to locking position froni the outside the key 1 may have its bit 22 inserted through the key-hole to engage the segment 19 so that when the key is rotated, the tumbler 17 will.

be rotated correspondingly for either looking or releasing the latch bolt. It is to be noted, however, that the segment 19 extends from one side to one end only of the tumbler 17, whereby when the tumbler 17 is swung with the said-end engaging the head of the latch bolt tohold-the latch bolt projected, the tumbler cannot be released through the medium of the key 21 since the segment 19 will be outof reach ot'the key bit This will enable the latch bolt to be so locked from the inside, that-a person on the outside even possessing a proper key, cannot unlock the latch bolt to enter the dwelling or'building. Thus, whenthe tumbler 17 is swung to position transversely of the latch bolt, the latch bolt may be readily retracted, and when the tumbler is swung to a longitudinal position, it will lock the latch bolt in projected position. The =tumbler may under all conditions, be -manipulated from the inside ofthedoor, but only can be manipulated from the outside under two conditions, namely, by means ofthekey 21, and when the segment 19 is in position to be engaged by the key bit 22 as above indicated.

In the variation illustrated in Figs. 6, 7 8 and 9, a modified form of detent is ap lied to a mortise lock. The mortise lock incliides the case 1 arranged in a vertical plane and having the face plate 1 through which the latch bolt 2 is slidable, the means for actuating and locking the latch bolt being the same as illustrated in Figs. 1 and 2. The case 1 fits in a mortise in the door Tn applying the detent to the mortise lock, 7

the face plate 1 is provided with a recess or depression 40 surrounding the latch bolt 2 and providing the ribs or flanges 41 be- I tween the recess 40 and the side edges of the lbolt 2.

ignated at 4A, is disposed above the latch bolt 2, it being noted that the detent 4:3 is disposed flatly within the recess or depression 4-0, and the said arm 44 of the detent 4:3'

is pivoted by means of a rivet or other pivot memberei whoseaxis isparallel to the latch bolt, to the face plate 1 adjacent the upper end of the recess 40 or above the latch The other arm 46 of the detent 13 projects below the latch bolt 2, and is extended to form a tappet or finger 47 projeeting through one of the slots or notches &2, it being noted that the detent isreversible in order that it may be properly positioned according to the direction in-which the door opens. The intermediate portion of the detent 43 is disposed at one side of the latch bolt 2,;and is adapted to swing overthe outer orfree end of the latch bolt when the same-is retracted, as seen in Fig. 9. The lateral swinging or oscillatory movement of the detent 453 about its longitudinal axis and between the sides of the case is limited by means of a slot 48 provided in the free arm of the detent, anda pin or rivet 49 passing through the slot 48 engaged to the face plate 1". The rivet or pin 49 being headed and engaged through the slot 48 will assist in holding the detent as within the recess or depression to to resist the tendency of the latch bolt to shoot outwardly.

Inorderto swing the detent l3 over the free end of the latch bolt 2 when the latch bolt is retracted and when the detent is free,a-doubled wire spring 50 has one end engaged withinthe arm 2 l of the detent 43 and has its other arm bearing against the flange or rib L1 opposite that one through which the tappet or finger 4:7 is passed. The spring 50 willtend to swing the detent as over the end of the latch bolt 2, so as to project the tappet or finger 47 through the respective slot 4-2.

In the use of the modified form of the detent, when the door 35 is closed, the tappet or finger 47 is arranged to strike the jamb, stop or other suitable part, so as to swing the detent 43 to the position illustrated in Fig. 6, when the door is closed. This will enable the latch bolt 2 to shoot outwardly into engagement with the keeper (not shown.) As soon as the latch bolt 2 is retracted, and the door opened, the detent 43 will be released, and will be swung to the position illustrated in Fig. 7 under the influence of the spring 50, and consequently the latch bolt 2 will be held in retracted position while the door is open, the tappet or finger 47 being projected through the slot 42, in order that when the door is again closed, the latch bolt will be released as above intimated.

Particular attention is directed to the fact that the U-shaped detent 43 surrounds three sides of the latch bolt, whereby the latch bolt and detent are assembled in a compact and effective manner.

Having thus described the invention, what is claimed as new 1s tion and having a gear segment extending from one side to one end thereof for the engagement of a gear bit.

2. In a look, a case, a latch bolt mounted therein, and having an opening a rectangular tumbler mounted within the said opening and having a spindle j ournaled through the case, the tumbler being rotatable for holding the latch bolt in projected position, the spindle having a knob at one side of the case, the other side of the case having a key-hole, the tumbler having a gear segment adjacent the last mentioned side of the case and extending from one side to one end of the tumbler, and a spring in the case adapted to bear against the ends and the side of the tumbler.

3. In a look, a face plate having a depression and opposite slots leading from the de pression, a latch bolt slidable through the face plate, a detent pivoted to the face plate and cooperable with the latch bolt to hold the same retracted, the axis of the pivot extending longitudinally parallel with the latch bolt, the detent being swingable between the sides of the depression and having an actuating portion to project through one or the other of the said slots, the detent being reversible and a spring carried by the detent to bear against one wall of the depression at either position of the detent and for swinging the detent into cooperative relation with the latch bolt.

4:. In a look, a faceplate having a depres-' ing reversible, and a spring carried by the detent and adapted to bear against one wall of the depression at either position of the detent and for swinging the detent into cooperable relation with the latch bolt.

5. In a look, a case arranged in a vertical plane, a horizontal latch bolt carried thereby, and a U-shaped detent having its arms disposed horizontally at right angles with the ease and having one arm pivoted to the case, the detent being cooperable with the latch bolt and arranged normally so that it surrounds three sides of the latch bolt, and the other arm of the detent forming a tappet projectable beyond one side of the case.

In testimony that I claim the foregoing as my own, I have hereto ailixed my signature in the presence of two witnesses.

LUTHER W. HOLLAND. Witnesses:

M. M. KNOW, I i A. R. WHEBRITT;

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). C. 

